Rumah > Artikel > pembangunan bahagian belakang > Kursus ranap PHP: Galeri Imej Mudah
Galeri imej berfungsi sepenuhnya dengan keupayaan muat naik menggunakan PHP, HTML, jQuery, AJAX, JSON, Bootstrap, CSS dan MySQL. Projek ini termasuk penyelesaian langkah demi langkah terperinci dengan penjelasan kod dan dokumentasi, menjadikannya tutorial komprehensif untuk pembelajaran.
Topik: php, mysql, blog, ajax, bootstrap, jquery, css, galeri imej, muat naik fail
simple-image-gallery/ │ ├── index.html ├── db/ │ └── database.sql ├── src/ │ ├── fetch-image.php │ └── upload.php ├── include/ │ ├── config.sample.php │ └── db.php ├── assets/ │ ├── css/ │ │ └── style.css │ ├── js/ │ │ └── script.js │ └── uploads/ │ │ └── (uploaded images will be stored here) ├── README.md └── .gitignore
db/database.sql:
CREATE TABLE IF NOT EXISTS `images` ( `id` int(11) NOT NULL AUTO_INCREMENT, `file_name` varchar(255) NOT NULL, `uploaded_on` datetime NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Tetapan konfigurasi (include/config.sample.php)
<?php define('DB_HOST', 'localhost'); // Database host define('DB_NAME', 'image_gallery'); // Database name define('DB_USER', 'root'); // Change if necessary define('DB_PASS', ''); // Change if necessary define('UPLOAD_DIRECTORY', '/assets/uploads/'); // Change if necessary ?>
Mewujudkan sambungan pangkalan data (termasuk/db.php)
<?php include 'config.php'; // Database configuration $dsn = 'mysql:host='.DB_HOST.';dbname='.DB_NAME; $options = [ PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, ]; // Create a new PDO instance try { $pdo = new PDO($dsn, DB_USER, DB_PASS, $options); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // Set error mode to exception } catch (PDOException $e) { echo 'Connection failed: ' . $e->getMessage(); // Display error message if connection fails } ?>
Struktur HTML (index.html)
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Image Gallery Upload</title> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"> <link rel="stylesheet" href="assets/css/styles.css"> </head> <body> <div class="container"> <h1 class="text-center mt-5">Image Gallery</h1> <div class="row"> <div class="col-md-6 offset-md-3"> <form id="uploadImage" enctype="multipart/form-data"> <div class="form-group"> <label for="image">Choose Image</label> <input type="file" name="image" id="image" class="form-control" required> </div> <button type="submit" class="btn btn-primary">Upload</button> </form> <div id="upload-status"></div> </div> </div> <hr> <div class="row" id="gallery"> <!-- Images will be loaded here --> </div> </div> <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script> <script src="assets/js/script.js"></script> <!-- Custom JS --> </body> </html>
Pengendalian AJAX (aset/js/script.js)
$(document).ready(function(){ // load gallery on page load loadGallery(); // Form submission for image upload $('#uploadImage').on('submit', function(e){ e.preventDefault(); // Prevent default form submission var file_data = $('#image').prop('files')[0]; var form_data = new FormData(); form_data.append('file', file_data); //hide upload section $('#uploadImage').hide(); $.ajax({ url: 'src/upload.php', // PHP script to process upload type: 'POST', dataType: 'text', // what to expect back from the server cache: false, data: new FormData(this), // Form data for upload processData: false, contentType: false, success: function(response){ let jsonData = JSON.parse(response); if(jsonData.status == 1){ $('#image').val(''); // Clear the file input loadGallery(); // Fetch and display updated images $('#upload-status').html('<div class="alert alert-success">'+jsonData.message+'</div>'); } else { $('#upload-status').html('<div class="alert alert-success">'+jsonData.message+'</div>'); // Display error message } // hide message box autoHide('#upload-status'); //show upload section autoShow('#uploadImage'); } }); }); }); // Function to load the gallery from server function loadGallery() { $.ajax({ url: 'src/fetch-images.php', // PHP script to fetch images type: 'GET', success: function(response){ let jsonData = JSON.parse(response); $('#gallery').html(''); // Clear previous images if(jsonData.status == 1){ $.each(jsonData.data, function(index, image){ $('#gallery').append('<div class="col-md-3"><img src="assets/uploads/'+image.file_name+'" class="img-responsive img-thumbnail"></div>'); // Display each image }); } else { $('#gallery').html('<p>No images found...</p>'); // No images found message } } }); } //Auto Hide Div function autoHide(idORClass) { setTimeout(function () { $(idORClass).fadeOut('fast'); }, 1000); } //Auto Show Element function autoShow(idORClass) { setTimeout(function () { $(idORClass).fadeIn('fast'); }, 1000); }
Mengambil Imej (src/fetch-images.php)
<?php include '../include/db.php'; // Include database configuration $response = array('status' => 0, 'message' => 'No images found.'); // Fetching images from the database $query = $pdo->prepare("SELECT * FROM images ORDER BY uploaded_on DESC"); $query->execute(); $images = $query->fetchAll(PDO::FETCH_ASSOC); if(count($images) > 0){ $response['status'] = 1; $response['data'] = $images; // Returning images data } // Return response echo json_encode($response); ?> ?>
Muat Naik Imej (src/upload.php)
<?php include '../include/db.php'; // Include database configuration $response = array('status' => 0, 'message' => 'Form submission failed, please try again.'); if(isset($_FILES['image']['name'])){ // Directory where files will be uploaded $targetDir = UPLOAD_DIRECTORY; $fileName = date('Ymd').'-'.str_replace(' ', '-', basename($_FILES['image']['name'])); $targetFilePath = $targetDir . $fileName; $fileType = pathinfo($targetFilePath, PATHINFO_EXTENSION); // Allowed file types $allowTypes = array('jpg','png','jpeg','gif'); if(in_array($fileType, $allowTypes)){ // Upload file to server if(move_uploaded_file($_FILES['image']['tmp_name'], $targetFilePath)){ // Insert file name into database $insert = $pdo->prepare("INSERT INTO images (file_name, uploaded_on) VALUES (:file_name, NOW())"); $insert->bindParam(':file_name', $fileName); $insert->execute(); if($insert){ $response['status'] = 1; $response['message'] = 'Image uploaded successfully!'; }else{ $response['message'] = 'Image upload failed, please try again.'; } }else{ $response['message'] = 'Sorry, there was an error uploading your file.'; } }else{ $response['message'] = 'Sorry, only JPG, JPEG, PNG, & GIF files are allowed to upload.'; } } // Return response echo json_encode($response); ?>
Penggayaan CSS (aset/css/style.css)
body { background-color: #f8f9fa; } #gallery .col-md-4 { margin-bottom: 20px; } #gallery img { display: block; width: 200px; height: auto; margin: 10px; }
Penyelesaian ini termasuk menyediakan projek, konfigurasi pangkalan data, struktur HTML, penggayaan dengan CSS, mengendalikan muat naik imej dengan AJAX dan menyimpan data imej dalam pangkalan data menggunakan PHP PDO. Setiap baris kod diulas untuk menerangkan tujuan dan fungsinya, menjadikannya tutorial komprehensif untuk membina galeri imej dengan fungsi muat naik.
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